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| Criterion |  Agile Affinity Estimation |  Agile Bucket System |  Systems Thinking Current Reality Tree |  Systems Thinking Causal Loop Diagram |
|---|---|---|---|---|
Purposedifferent | When many tasks need to be classified quickly, it sorts them by perceived effort and similarity. It reduces the effort of fine-grained estimation for large volumes. | When a large batch of work needs a fast, rough estimate, it sorts items into predefined size buckets. It sorts work by value, risk, and delivery ability. The result is captured as a Bucketed Backlog, Relative Estimates, and Split Candidates. | A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. | A Causal Loop Diagram makes feedback, reinforcement, and balance in a system legible. It uncovers side effects and self-reinforcement that stay hidden in linear explanations. |
Complexitydifferent | Medium | Medium | High | Medium |
Timedifferent | 30-90 min | 30-90 min | 2-6 h | 1-3 h |
Participantsdifferent | 3-12 | 3-12 | 3-8 | 2-8 |
Formatsame | Workshop | Workshop | Workshop | Workshop |
Outputdifferent | Affinity Size Map, Grouped Estimates, Unclear Items | Bucketed Backlog, Relative Estimates, Split Candidates | Current Reality Tree, Core Problems, Intervention Ideas | Causal Loop Diagram, Feedback Notes, Leverage Points |
Tagsno overlap | EstimationBacklogRelative sizing | EstimationBacklogRelative sizing | Systems thinkingRoot causeConstraintsCausality | FeedbackSystems thinkingCausalityDynamics |